A MEASUREMENT OF THE COSMIC MICROWAVE BACKGROUND B-MODE POLARIZATION WITH POLARBEAR
| Autor: | X. Meng, N. W. Halverson, P. Hyland, M. J. Myers, Nathan Miller, Daniel Flanigan, M. Atlas, A. E. Anthony, Josquin Errard, D. Poletti, Kam Arnold, M. Navaroli, R. Keskitalo, Zigmund Kermish, A. J. Gilbert, J. Borrill, Masashi Hazumi, M. A. Dobbs, Hans P. Paar, T. Matsumura, Yuji Chinone, E. Quealy, G. Fabbian, H. Morii, Peter A. R. Ade, M. Le Jeune, Brian Keating, Y. Akiba, Jonathon Howard, Scott Chapman, Tucker Elleflot, S. Moyerman, William F. Grainger, W. L. Holzapfel, Gabriel M. Rebeiz, Masaya Hasegawa, J. Peloton, Eric V. Linder, Theodore Kisner, Kaori Hattori, E. M. Leitch, Marius Lungu, Frederick Matsuda, Y. Hori, Angelo Orlando, Darcy Barron, Yuki Inoue, H. Nishino, A. T. Lee, G. Jaehnig, Chang Feng, Andrew H. Jaffe, D. Boettger |
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| Rok vydání: | 2015 |
| Předmět: |
Physics
Gravitational wave Bolometer Cosmic microwave background Astrophysics::Instrumentation and Methods for Astrophysics Cosmic background radiation Astronomy Spectral density Astrophysics::Cosmology and Extragalactic Astrophysics General Medicine Astrophysics Polarization (waves) law.invention Gravitational lens law Transition edge sensor |
| Zdroj: | Publications of The Korean Astronomical Society. 30:625-628 |
| ISSN: | 1225-1534 |
| Popis: | Polarbear is a ground-based experiment located in the Atacama desert of northern Chile. The experiment is designed to measure the Cosmic Microwave Background B-mode polarization at several arcminute resolution. The CMB B-mode polarization on degree angular scales is a unique signature of primordial gravitational waves from cosmic inflation and B-mode signal on sub-degree scales is induced by the gravitational lensing from large-scale structure. Science observations began in early 2012 with an array of 1, 274 polarization sensitive antenna-couple Transition Edge Sensor (TES) bolometers at 150 GHz. We published the first CMB-only measurement of the B-mode polarization on sub-degree scales induced by gravitational lensing in December 2013 followed by the first measurement of the B-mode power spectrum on those scales in March 2014. In this proceedings, we review the physics of CMB B-modes and then describe the Polarbear experiment, observations, and recent results. |
| Databáze: | OpenAIRE |
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